Generalized Chaplygin gas model: constraints from Hubble parameter versus Redshift Data
| dc.creator | Wu, Puxun | |
| dc.creator | Yu, Hongwei | |
| dc.date | 2006-12-09 | |
| dc.date.accessioned | 2026-07-07T11:21:35Z | |
| dc.date.available | 2026-07-07T11:21:35Z | |
| dc.description | We examine observational constraints on the generalized Chaplygin gas (GCG) model for dark energy from the 9 Hubble parameter data points, the 115 SNLS Sne Ia data and the size of baryonic acoustic oscillation peak at redshift, $z=0.35$. At a 95.4% confidence level, a combination of three data sets gives $0.67\leq A_s\leq 0.83$ and $-0.21\leq α\leq 0.42$, which is within the allowed parameters ranges of the GCG as a candidate of the unified dark matter and dark energy. It is found that the standard Chaplygin gas model ($α=1$) is ruled out by these data at the 99.7% confidence level. | |
| dc.description | 13 pages, 5 figures, to appear in PLB | |
| dc.identifier | https://arxiv.org/abs/gr-qc/0612055 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/0612055 | |
| dc.identifier | Phys.Lett.B644:16-19,2007 | |
| dc.identifier | doi:10.1016/j.physletb.2006.11.028 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194306 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Generalized Chaplygin gas model: constraints from Hubble parameter versus Redshift Data | |
| dc.type | text |